ブナ林におけるブナの実生と落下種子の密度と分布

概要

論文の詳細を見る
Densities and distributions of beech seedlings and fallen seeds in a beech forest (730m in altitude) were studied at eastern foot of Mt Tanigawa, central Japan. Density of fallen seeds varied from 16/m^2 to 1248/m^2 in the forest, these differences might be due to the distribution of mother trees, and also there were differences in density of seedlings. High density of the seedling was found at the place, where the inclination was from 0°to 15°, coverage of undergrowth was lower than 20%, relative illuminance was from 10% to 20%, thickness of L layer was from 0cm to 3cm, and water content of the soil was about 60%. About 63% of total fallen seeds were apparently sound seeds, 19.2% immature seeds, and 17.7% damaged seeds by insects. Survivorship rate of the beech during the period from the sound seeds to seedlings was estimated at 13.2%. Factors affecting behaviour of the fallen seeds waiting germination on the forest floor were discussed briefly.
群馬県立女子大学の論文
1984-03-31